Heat transfer and pressure drop of supercritical CO2 in brazed plate heat exchangers of the tri-partite gas cooler

•The supercritical CO2 cooled in brazed plate heat exchangers is studied.•The brazed plate heat exchangers have diverse functions in tri-partite gas cooler.•The effects of different parameters on heat transfer and pressure drop are shown.•The well-known available heat transfer correlations for supercritical CO2 are evaluated.•The new heat transfer correlations for supercritical CO2 are developed.